Garden Calendar

“Mrs. P’s Pressed Flower Workshop,” with instructor Lynn Pitts, Saturday, 10 a.m.-noon, at the Arboretum of Los Angeles County, 301 N. Baldwin Ave., Arcadia, (626) 821-3222. $32, includes a complete kit of supplies.

National Cactus and Succulent Show and sale with more than 1,000 plants on view, Saturday and Sunday, 10:30 a.m.-4:30 p.m., at the Huntington Library and Botanical Gardens, 1151 Oxford Road, San Marino, (626) 405-2141, https://www.huntington.org. $8.50.